Stihl BG 56 C Manual: A Comprehensive Guide
This manual details the Stihl BG 56 C blower‚ alongside variations like BG 56‚ 66‚ 66 C‚ 86‚ SH 56‚ and SH 86.
It covers maintenance‚ troubleshooting‚ and specific issues like fuel exhaust (GT225) and oil pump problems‚ ensuring optimal performance.
The Stihl BG 56 C is a powerful and versatile handheld blower‚ designed for both residential and professional use. This guide provides comprehensive information for owners‚ covering operation‚ maintenance‚ and troubleshooting. Stihl has a long-standing reputation for quality‚ and the BG 56 C continues this tradition.
Understanding your blower is crucial for safe and efficient operation. This manual will walk you through each component‚ from the engine to the blower housing‚ and explain how they work together. Whether you’re a seasoned professional or a first-time user‚ this resource will help you maximize the performance and longevity of your Stihl BG 56 C.
Remember to consult this manual before each use.
Safety Precautions
Always prioritize safety when operating the Stihl BG 56 C. Wear appropriate personal protective equipment‚ including eye and hearing protection‚ as well as a dust mask. Be aware of your surroundings and keep bystanders at a safe distance.
Never operate the blower with missing or damaged parts. Ensure proper ventilation when fueling and avoid operating near flammable materials. Inspect the blower before each use for any signs of damage or leaks.
Always shut off the engine before performing any maintenance or adjustments. Proper handling and adherence to these precautions will minimize the risk of injury and ensure safe operation.
Understanding the Components
The Stihl BG 56 C comprises several key components. The engine provides power‚ while the blower housing and fan generate airflow. The handle incorporates controls for throttle and on/off switching‚ ensuring user operation.
Familiarize yourself with the location of the fuel tank‚ air filter‚ and spark plug for maintenance purposes. Understanding the function of each part – from the carburetor to the muffler – is crucial for effective troubleshooting and repair.
Proper component knowledge aids in safe and efficient blower operation.
Engine Overview
The Stihl BG 56 C is powered by a 2-stroke engine‚ requiring a precise fuel-oil mixture for optimal performance. This engine design delivers a high power-to-weight ratio‚ essential for handheld blowers.
Key engine components include the carburetor‚ responsible for fuel delivery‚ and the spark plug‚ initiating combustion. The crankshaft and flywheel work in unison to convert reciprocating motion into rotational force.
Regular maintenance‚ like spark plug replacement‚ ensures reliable engine operation.
Blower Housing and Fan
The Stihl BG 56 C’s blower housing is engineered to maximize airflow and direct it efficiently through the blower tube. Constructed from durable materials‚ it withstands the impact of debris during operation.
The fan‚ driven by the engine‚ generates the air velocity necessary for effective blowing. Its design balances airflow volume with air speed for versatile performance.
Regular inspection of the fan for damage is crucial‚ as imbalances can cause vibration and reduce blower efficiency. Maintaining a clean housing ensures optimal air intake.
Handle and Controls
The Stihl BG 56 C features ergonomically designed handles for comfortable operation and precise control. These handles are typically adjustable to accommodate various user preferences and working positions.
Key controls include the on/off switch‚ throttle trigger‚ and potentially a variable speed dial for adjusting blower intensity. Familiarize yourself with the location and function of each control before operation.
The throttle lockout button prevents accidental throttle engagement‚ enhancing safety. Regular inspection of the handles and controls ensures they remain functional and secure.
Assembly Instructions
Before operating your Stihl BG 56 C‚ proper assembly is crucial for safe and efficient performance. This typically involves attaching the handle to the blower housing using the provided bolts and fasteners – ensure they are securely tightened.
Next‚ mount the blower tube‚ aligning it correctly with the blower housing and locking it into place. Verify a snug fit to prevent air leakage and maintain optimal blowing power.
Double-check all connections before each use. Improper assembly can lead to operational issues or potential hazards.
Attaching the Handle
Securely attaching the handle to the Stihl BG 56 C blower is the first assembly step. Locate the handle mounting points on the blower housing and align the handle accordingly.
Utilize the provided bolts and fasteners‚ tightening them firmly with the appropriate tools. Ensure the handle is stable and doesn’t wobble during operation.
Proper handle attachment is vital for comfortable control and maneuverability. A loose handle can compromise safety and reduce the blower’s effectiveness.
Always double-check the tightness of the bolts before each use.
Mounting the Blower Tube
Correctly mounting the blower tube to your Stihl BG 56 C is crucial for directing airflow effectively. Align the blower tube with the designated port on the blower housing.
Typically‚ a locking mechanism or twist-lock system secures the tube in place. Ensure it clicks or locks firmly to prevent detachment during operation.
Verify the tube’s rotational freedom‚ allowing you to adjust the blowing direction. A properly mounted tube enhances the blower’s performance and user control.
Inspect the connection before each use to confirm a secure fit.
Fueling and Mixing
Proper fuel mixture is vital for the Stihl BG 56 C’s engine longevity and performance. Always use a high-quality‚ unleaded gasoline with a minimum octane rating of 87.
Stihl recommends a 50:1 fuel-to-oil ratio when using Stihl HP Ultra oil. This translates to 2.8 ounces (83 ml) of HP Ultra oil per 1 gallon (3.8 liters) of gasoline.
Thoroughly mix the fuel and oil in a clean‚ approved container before adding it to the BG 56 C’s fuel tank.
Avoid using fuel mixtures exceeding 30 days old‚ as they can degrade and cause engine issues.
Recommended Fuel Mix Ratio
For optimal performance and to prevent engine damage‚ the Stihl BG 56 C requires a precise fuel-to-oil ratio. Stihl explicitly recommends a 50:1 mixture when utilizing their proprietary Stihl HP Ultra 2-cycle engine oil.
This ratio equates to 2.8 ounces (83 milliliters) of Stihl HP Ultra oil per one gallon (3.8 liters) of high-quality‚ unleaded gasoline with a minimum octane rating of 87.
Deviation from this recommended ratio can lead to engine malfunctions‚ reduced lifespan‚ and potential warranty voidance. Always double-check measurements for accuracy.
Stihl HP Ultra Oil Considerations
Stihl HP Ultra oil is specifically formulated for the demanding requirements of Stihl 2-cycle engines‚ including the BG 56 C. While other 2-cycle oils may be used‚ Stihl strongly advises against it‚ as they haven’t been tested and validated for compatibility.
Concerns have been raised regarding sufficient oil film in the crankcase when using alternative oils‚ potentially leading to premature wear and engine failure. HP Ultra ensures optimal lubrication and cooling‚ even under heavy loads.
Using Stihl HP Ultra helps maintain warranty validity and guarantees peak engine performance.
Starting the BG 56 C
Successfully starting your Stihl BG 56 C requires understanding both cold and warm start procedures. A cold start necessitates engaging the choke fully‚ setting the throttle to the starting position‚ and firmly pulling the starter cord until the engine attempts to ignite.
Gradually reduce choke engagement as the engine warms. For a warm start‚ typically only a partial choke is needed‚ or none at all‚ depending on engine temperature.
Ensure the blower is on a stable surface and your footing is secure before attempting to start.
Cold Start Procedure
To initiate a cold start on your Stihl BG 56 C‚ first ensure the machine is positioned on a level‚ stable surface. Fully engage the choke lever; this enriches the fuel mixture for initial ignition.
Set the throttle control to the starting position‚ typically indicated by a rabbit symbol. Firmly grasp the starter handle and pull the cord with a smooth‚ deliberate motion. Repeat several times until the engine shows signs of firing.
Gradually disengage the choke as the engine runs‚ adjusting the throttle as needed for smooth operation.
Warm Start Procedure
When restarting a warm Stihl BG 56 C engine‚ the procedure differs slightly from a cold start. Typically‚ the choke is not required‚ or only partially engaged‚ as residual fuel remains in the carburetor.
Set the throttle control to the starting position (rabbit symbol) and firmly grasp the starter handle. Pull the cord with a smooth‚ consistent motion; the engine should ignite with minimal effort.
If the engine fails to start‚ briefly engage the choke and repeat the starting process. Adjust the throttle as needed to maintain stable operation.
Operating Instructions
Before operation‚ ensure a clear work area‚ free of obstructions and potential hazards. Always wear appropriate personal protective equipment‚ including eye and hearing protection.
To start‚ grasp the blower firmly with both hands‚ maintaining a balanced stance. Initiate the blower by following the starting procedure outlined previously‚ and gradually increase throttle speed.
Employ a sweeping motion‚ directing the airflow across the surface to be cleared. Avoid aiming directly at people or animals‚ and be mindful of dust and debris displacement.
Proper Blower Technique
Maintain a comfortable‚ balanced stance with a firm grip on the Stihl BG 56 C. Utilize a sweeping motion‚ angling the blower nozzle slightly downward to maximize efficiency and minimize dust dispersal.
Work with the wind whenever possible‚ directing debris towards a desired collection point. Avoid creating dust clouds by controlling blower speed and nozzle angle.
For stubborn debris‚ gradually increase throttle‚ but never exceed the recommended operating range. Overlap passes slightly to ensure complete clearing‚ and regularly inspect the work area for remaining material.
Adjusting Blower Direction
The Stihl BG 56 C’s blower direction is adjusted via the rotating nozzle. Loosen the nozzle locking lever before repositioning to the desired angle‚ then securely tighten the lever.
For focused airflow‚ aim the nozzle directly at the debris. To cover a wider area‚ angle the nozzle outwards‚ creating a broader sweep pattern.
Experiment with different angles to optimize performance based on the terrain and debris type. Regularly check the nozzle’s locking mechanism to prevent unintentional adjustments during operation‚ ensuring consistent control.
Maintenance Schedule
Regular maintenance is crucial for the Stihl BG 56 C’s longevity. After each use‚ inspect for loose parts and clean the housing. Every 25 operating hours‚ clean the air filter to ensure optimal engine performance.
The spark plug should be replaced after 100 operating hours‚ or annually‚ whichever comes first. Inspect the fuel lines for cracks or leaks and replace as needed.
Pay close attention to oil pump functionality‚ especially if bar oiling issues arise. Consistent upkeep prevents costly repairs and maintains blower efficiency.
Air Filter Cleaning
Maintaining a clean air filter is vital for the Stihl BG 56 C’s engine health. After approximately 25 operating hours‚ or more frequently in dusty conditions‚ the filter requires attention. Remove the filter cover and carefully take out the filter element.
Gently tap the filter to dislodge loose debris‚ or use low-pressure compressed air – blowing from the inside out. Avoid using solvents or water‚ as these can damage the filter material.
Inspect for tears or damage; replace if necessary. Reinstall the clean filter and cover securely before resuming operation.
Spark Plug Replacement
Regular spark plug replacement ensures reliable ignition and optimal engine performance of your Stihl BG 56 C. It’s recommended to replace the spark plug after every 100 operating hours‚ or annually‚ whichever comes first. Use only the specified spark plug type for your model.
Carefully remove the spark plug cap and unscrew the old plug using a spark plug wrench. Check the gap of the new plug and adjust if needed. Install the new plug‚ tightening it to the specified torque.
Reattach the spark plug cap securely before restarting the blower.
Fuel System Maintenance
Maintaining a clean fuel system is crucial for the Stihl BG 56 C’s performance. Regularly inspect the fuel lines for cracks‚ leaks‚ or deterioration‚ replacing them as needed. Ensure the fuel filter is clean to prevent debris from reaching the carburetor.
If experiencing issues like fuel leaking from the exhaust (as seen in GT225 cases)‚ a carburetor adjustment or replacement may be necessary. Proper fuel mixing with Stihl HP Ultra oil is vital to avoid engine damage.
Always use fresh fuel and store it correctly.
Carburetor Adjustment
Proper carburetor adjustment is essential for optimal Stihl BG 56 C operation. If the engine runs poorly or exhibits issues like excessive fuel expulsion from the exhaust (similar to a GT225 problem)‚ adjustment is needed. Begin by ensuring the air filter is clean‚ as this impacts mixture settings;
Adjust the idle speed and mixture screws carefully‚ following the factory specifications outlined in the service manual. Incorrect adjustments can lead to rich or lean running conditions‚ causing starting difficulties or engine damage.
Professional adjustment is recommended if unfamiliar with the process.
Fuel Line Inspection and Replacement
Regularly inspect the fuel line for cracks‚ kinks‚ or deterioration. A compromised fuel line can cause fuel delivery issues‚ mirroring problems seen in a Stihl GT225 with fuel expulsion. Check connections for tightness and ensure they are free from debris.
If the fuel line appears damaged‚ replace it immediately with a Stihl-approved replacement part. Use fuel line specifically designed for two-stroke engines‚ resisting degradation from the fuel mix.
Proper fuel line integrity is crucial for reliable engine performance and prevents potential hazards.
Oil Pump Issues and Troubleshooting
Insufficient bar lubrication is a common concern‚ as reported with some Stihl chainsaws where oil appears to pump but doesn’t reach the bar. First‚ verify the oil pump is actively pumping by observing oil flow with the bar removed – oil should be visible.
If oil flows freely without the bar‚ the issue lies within the bar’s oil holes or the bar itself. Clean the bar’s oil ports thoroughly. Address oil leakage by checking pump seals and connections for damage or looseness.
Ensure proper oil levels and use Stihl HP Ultra oil for optimal lubrication.
Checking Oil Flow to the Bar (if applicable)
To assess oil delivery‚ carefully remove the bar and chain assembly. Start the engine and briefly activate the throttle‚ observing the oil pump outlet. A consistent stream of oil should be visible‚ indicating the pump is functioning correctly.
If no oil appears‚ investigate the oil pump drive mechanism and ensure it’s properly engaged. Check for obstructions in the oil lines or a clogged oil filter. Verify adequate oil levels in the reservoir.
Reinstall the bar and chain to confirm oil reaches the chain during operation.
Addressing Oil Leakage
Oil leakage often stems from loose oil pump screws or a damaged oil pump housing. Inspect these components first‚ tightening screws securely or replacing damaged parts. Check the oil tank cap for a proper seal; a faulty cap can cause spillage during operation.
Examine the oil lines for cracks or loose connections. Ensure the bar and chain are correctly mounted‚ as improper installation can lead to oil escaping. If leakage persists‚ a rebuild of the oil pump may be necessary‚ requiring professional assistance.
Troubleshooting Common Problems
If the engine won’t start‚ verify fuel levels‚ check the spark plug for fouling‚ and ensure the choke is engaged correctly for cold starts. Poor engine performance often indicates a dirty air filter‚ incorrect fuel mixture‚ or a clogged carburetor. Raw fuel expulsion from the exhaust‚ as seen in GT225 models‚ suggests carburetor issues.
Oil flow problems can be traced to a faulty oil pump or blocked oil lines. Address these issues promptly to prevent engine damage. Consult a qualified technician for complex problems or if you’re uncomfortable performing repairs.
Engine Won’t Start
A non-starting engine requires systematic diagnosis. First‚ confirm adequate fuel in the tank and verify the fuel line isn’t obstructed. Inspect the spark plug; a fouled plug prevents ignition. Ensure proper choke engagement for cold starts – too much or too little can hinder starting. Check the air filter for blockage‚ restricting airflow.
If these steps fail‚ examine the carburetor for debris or a malfunctioning diaphragm. Low compression can also be a culprit‚ requiring professional attention. Always disconnect the spark plug wire before performing any maintenance.
Engine Runs Poorly
Poor engine performance often stems from fuel system issues. A clogged air filter restricts airflow‚ causing a rich mixture. Inspect the spark plug for fouling‚ indicating incomplete combustion. Verify the correct fuel-to-oil ratio; improper mixing leads to inefficient burning. Carburetor problems‚ like a dirty jet‚ are common causes.
If the engine floods easily‚ adjust the carburetor settings. Older models (009‚ MS180C‚ MS290) may run rich‚ requiring adjustment. Ensure fresh fuel is used‚ as stale fuel degrades and impacts performance.
Specific Model Variations (BG 56‚ BG 66‚ BG 66 C‚ BG 86‚ SH 56‚ SH 86)
While sharing core components‚ these Stihl blowers exhibit differences. The BG 66 and 86 offer increased blowing force compared to the BG 56. The BG 66 C features electronic control for enhanced usability. SH models (56‚ 86) are shoulder-mounted‚ providing greater maneuverability.
Maintenance procedures are largely consistent across the range‚ but specific parts may vary. Top handle saws (192T‚ 193T) have unique considerations. Crankshaft/flywheel degreasing is crucial for all models‚ ensuring oil-free mounting for optimal performance.
Crankshaft and Flywheel Maintenance
Proper crankshaft and flywheel care is vital for longevity. Degreasing these components is paramount before reassembly‚ ensuring optimal performance and preventing issues. Always mount the flywheel oil-free; any residual oil can cause slippage and engine malfunction.
This procedure applies to BG 56‚ 66‚ 66 C‚ 86‚ SH 56‚ and SH 86 models. Thorough cleaning removes carbon buildup‚ improving balance and reducing vibration. Refer to the service manual for detailed disassembly and reassembly instructions. Inspect for damage during maintenance.
Degreasing Procedures
Effective degreasing of the crankshaft and flywheel is crucial before re-mounting. Utilize a dedicated parts cleaning solvent‚ avoiding harsh chemicals that could damage components. Thoroughly saturate the parts‚ allowing the solvent to penetrate and dissolve carbon buildup and old oil residue.
Employ a parts cleaning brush to agitate stubborn deposits‚ ensuring complete coverage. Rinse with clean solvent and allow parts to air dry completely before assembly. This meticulous process prevents slippage and ensures optimal engine performance across BG 56 and related models.
Oil-Free Mounting
Mounting the flywheel and crankshaft completely dry is paramount after thorough degreasing. Absolutely no oil or lubricant should be applied to these surfaces during reassembly. This ensures proper friction and prevents slippage‚ critical for maintaining consistent engine timing and power output.
Carefully align the flywheel with the crankshaft‚ utilizing the appropriate mounting tool. Tighten the flywheel nut to the manufacturer’s specified torque. This oil-free mounting procedure is essential for all BG 56‚ BG 66‚ and related Stihl models‚ guaranteeing reliable operation and longevity.
Top Handle Saw Considerations (192T‚ 193T Series)
Stihl’s 192T and 193T series top handle saws demand specialized attention due to their unique operational demands. These saws‚ often used for professional tree care‚ require meticulous rebuilding and modification for peak performance. Regular inspection of key components‚ including the fuel system and bar lubrication‚ is crucial.
Experienced technicians can address common issues and implement performance-enhancing modifications. Detailed guides and resources are available for rebuilding‚ fixing‚ and understanding the subtle differences between these models‚ ensuring safe and efficient operation.
Repairing Fuel Exhaust Issues (GT225 Example)
The Stihl GT225 string trimmer often presents fuel exhaust problems‚ manifesting as raw fuel expulsion after only brief operation – around 15 seconds. Initial troubleshooting should focus on the carburetor; however‚ simply replacing it may not resolve the issue. Careful inspection of the fuel line and return system is essential to ensure they are unobstructed.
If the lines are clear‚ further investigation is needed‚ potentially involving a deeper dive into the engine’s internal components. Addressing this issue requires a systematic approach to diagnose and rectify the underlying cause of the fuel overflow.
Weight Comparison: 034 Super vs. 038 Super
Determining the precise weight difference between the Stihl 034 Super and 038 Super can be surprisingly elusive. While the 038 Super boasts a larger 66cc engine compared to the 034 Super’s 61cc‚ the weight disparity isn’t immediately obvious. Experienced users and owners often debate this point‚ with definitive figures proving difficult to pinpoint.
Despite the engine size difference‚ the weight is relatively comparable‚ making the choice between the two often depend on power needs rather than substantial weight considerations. Both saws are valued for their performance and durability.
Older Model Maintenance (009‚ MS180C‚ MS290)
Maintaining older Stihl models like the 009‚ MS180C‚ and MS290 requires a dedicated approach. The 009‚ a top-handle saw‚ often suffers from carburetor issues‚ running rich and flooding. Regular cleaning and potential rebuilds are common. The MS180C and MS290‚ while reliable‚ benefit from consistent maintenance to prevent wear and tear.
Fuel system upkeep is crucial for these older saws‚ ensuring proper fuel flow and preventing gumming. Owners often report success with careful carburetor adjustments and diligent filter cleaning‚ extending the lifespan of these classic Stihl chainsaws.
Winter Storage Preparation
Proper winterization is vital for preserving your Stihl BG 56 C and related models (BG 56‚ 66‚ etc.). Begin by thoroughly draining the fuel tank and carburetor to prevent fuel degradation and starting issues next season. Remove the spark plug and add a tablespoon of 2-cycle engine oil into the cylinder‚ pull the starter cord several times to coat the internal components.
Clean the blower housing and inspect for any damage. Store the unit in a dry‚ dust-free environment. Consider a protective cover to shield it from the elements‚ ensuring it’s ready for spring use.
Warranty Information
Stihl products‚ including the BG 56 C and its variations (BG 56‚ 66‚ 86‚ SH 56‚ etc.)‚ are covered by a limited warranty. This warranty typically covers defects in materials and workmanship for a specified period from the date of purchase. Commercial use may have a reduced warranty duration.
Registration of your Stihl product is crucial to activate the full warranty benefits. The warranty does not cover items subject to normal wear and tear‚ or damage caused by improper use or maintenance. Contact your local Stihl dealer for complete warranty details and claim procedures.