208
TROUBLESHOOTING
Engine
Complaint
Symptom and possible causes
Remedy
Engine lacks
power
Insuffi cient tappet clearance
Adjust
Weak valve spring
Replace
Mistimed valves
Adjust
Worn cylinder
Rebore or replace
Worn piston ring
Replace
Improper valve seating
Repair or replace
Fouled spark plug
Clean or replace
Incorrect spark plug
Replace
Clogged carburetor jet
Clean
Incorrect fl oat chamber fuel level
Adjust fl oat height
Dirty air cleaner element
Clean or replace
Worn camshaft
Replace
Air leakage from intake pipe
Tighten or replace
Excessive amount of engine oil
Check level and drain
Engine overheats
Carbon build-up on piston crown
Clean
Insuffi cient amount of engine oil
Check level an add
Defective oil pump
Replace
Clogged oil circuit
Clean
Float chamber fuel level too low
Adjust fl oat height
Air leakage from intake pipe
Tighten or replace
Incorrect engine oil
Change
Carburetor
Starting diffi culty
Clogged starter jet
Clean
Clogged starter jet passage
Clean
Air leaking from joint between starter body and carburetor
Tighten, adjust or replace gasket
Air leaking from carburetor joint or vacuum hose joint
Tighten or replace defective part
Improperly working starter plunger
Adjust
Idling or low-speed
trouble
Clogged or loose pilot jet
Clean or tighten
Clogged or loose pilot air jet
Clean or tighten
Air leaking from carburetor joint or vacuum pipe joint, or starter
Tighten or replace defective part
Clogged pilot outlet port
Clean
Clogged bypass port
Clean
Starter plunger not fully closed
Adjust
Medium-or high
speed trouble
Clogged main jet
Clean
Clogged main air jet
Clean
Clogged needle jet
Clean
Improperly working throttle valve
Adjust
Clogged fuel fi lter
Clean or replace
Overfl ow and fuel
level fl uctuations
Worn or damaged needle valve
Replace
Broken needle valve spring
Replace
Improperly working fl oat
Adjust or replace
Foreign matter an the needle valve
Clean or replace with needle valve seat
Incorrect fl oat chamber fuel level
Adjust fl oat height
Содержание madass
Страница 53: ...50 LUBRICATION SYSTEM...
Страница 111: ...10 12 Nm 10 14 Nm 108 CYLINDER PISTON...
Страница 112: ...109 ZYLINDER KOLBEN...
Страница 129: ...1 2 126 CLUTCH GEARSHIFT LINKAGE Remove the primary drive clutch 1 and clutch center guide 2...
Страница 130: ...127 KUPPLUNG SCHALTGEST NGE Das Prim rantriebsrad 1 und die Kupplungsnaben Lager h lse 2 entfernen...
Страница 191: ...PICK UP KILL SWITCH RPM STOP B R G G G Bl W 188 IGNITION SYSTEM SCHEMA...
Страница 192: ...PICK UP KILLSCHALTER DREHZAHLBEGRENZER Z NDANGLEICHER B R G G G Bl W 189 Z NDSYSTEM DIAGRAM...