Problem |
Solution |
| Engine won't start |
|
Airflow is restricted |
Clean fuel filter |
Fuel doesn't reach the carburetor |
Clean fuel filter |
Engine and/or fuel system has an air leak |
Inspect fuel tank, line and engine for poor seals |
Fuel mixture needles not properly set |
Return needles to factory-recommended settings for starting |
Glow plug fails to function |
Replace glow plug and/or charge glow plug igniter |
| |
|
| Engine starts, then dies |
|
Idle is set to low |
Adjust idle-speed screw clockwise |
Low-speed needle is set to rich |
Lean out low-speed mixture |
Low-speed needle is set to lean |
Richen low-speed needle |
Clutch is binding |
Take clutch apart and fix the problem |
Glow plug is loose |
Tighten glow plug |
Glow plug is fouled |
Replace glow plug |
Engine has an air leak |
Seal engine with high temp sealer |
Piston and sleeve are worn |
Replace piston and sleeve |
Damaged bearings in the clutch bell |
Clean or replace bearings |
| |
|
| Engine bogs when given full throttle |
|
| Low-speed needle is set too rich |
Lean out low-speed mixture |
Clutch engages to quickly |
replace clutch springs/shoes |
Glow plug is to cold |
Install a hotter plug |
| |
|
| Engine doesn't idle correctly |
|
Engine might have air leak |
Seal engine with silicone |
Low-speed needle is set to lean |
richen low-speed needle |
| |
|
| Engine bogs or dies at high speed |
|
High-speed needle is set to lean |
Richen high-speed mixture |
Fuel flow is restricted |
Clean fuel filter |
Piston and sleeve are worn |
Replace piston and sleeve |
| |
|
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