Sachs Bikes MadAss Reparaturanleitung Seite 211

TROUBLESHOOTING
Engine
Complaint Symptom and possible causes
Engine lacks Insuffi cient tappet clearance
power
Weak valve spring
Mistimed valves
Worn cylinder
Worn piston ring
Improper valve seating
Fouled spark plug
Incorrect spark plug
Clogged carburetor jet
Incorrect fl oat chamber fuel level
Dirty air cleaner element
Worn camshaft
Air leakage from intake pipe
Excessive amount of engine oil
Engine overheats Carbon build-up on piston crown
Insuffi cient amount of engine oil
Defective oil pump
Clogged oil circuit
Float chamber fuel level too low
Air leakage from intake pipe
Incorrect engine oil
Carburetor
Starting diffi culty Clogged starter jet
Clogged starter jet passage
Air leaking from joint between starter body and carburetor
Air leaking from carburetor joint or vacuum hose joint
Improperly working starter plunger
Idling or low-speed Clogged or loose pilot jet
trouble
Clogged or loose pilot air jet
Air leaking from carburetor joint or vacuum pipe joint, or starter
Clogged pilot outlet port
Clogged bypass port
Starter plunger not fully closed
Medium-or high Clogged main jet
speed trouble
Clogged main air jet
Clogged needle jet
Improperly working throttle valve
Clogged fuel fi lter
Overfl ow and fuel Worn or damaged needle valve
level fl uctuations
Broken needle valve spring
Improperly working fl oat
Foreign matter an the needle valve
Incorrect fl oat chamber fuel level
208
Remedy
Adjust
Replace
Adjust
Rebore or replace
Replace
Repair or replace
Clean or replace
Replace
Clean
Adjust fl oat height
Clean or replace
Replace
Tighten or replace
Check level and drain
Clean
Check level an add
Replace
Clean
Adjust fl oat height
Tighten or replace
Change
Clean
Clean
Tighten, adjust or replace gasket
Tighten or replace defective part
Adjust
Clean or tighten
Clean or tighten
Tighten or replace defective part
Clean
Clean
Adjust
Clean
Clean
Clean
Adjust
Clean or replace
Replace
Replace
Adjust or replace
Clean or replace with needle valve seat
Adjust fl oat height