GB-16
11. Troubleshooting guide
Case 1. Starting failure
CHECK
PROBABLE CAUSES
ACTION
fuel tank
→
incorrect fuel
→
drain it and use correct fuel
fuel filter
→
fuel filter is clogged
→
clean
carburetor adjustment screw
→
out of normal range
→
adjust to normal range
sparking (no spark)
→
spark plug is fouled/wet
→
clean/dry
→
plug gap is incorrect
→
correct (GAP: 0.6 ~ 0.7 mm)
spark plug
→
disconnected
→
retighten
Case 2. Engine starts but does not keep running/hard re-starting
CHECK
PROBABLE CAUSES
ACTION
fuel tank
→
incorrect fuel or staled fuel
→
drain it and use correct fuel
carburetor adjustment screw
→
out of normal range
→
adjust to normal range
muffler, cylinder (exhaust port)
→
carbon is built-up
→
wipe away
air cleaner
→
clogged with dust
→
wash
cylinder fin, fan cover
→
clogged with dust
→
clean
When your unit seems to need further service, please consult with our KOMATSU ZENOAH
®
service shop in your area.
Limited warranty
Should any failure occur on the product under normal oper-
ating conditions within the applicable warranty period, the
failed part will be replaced or repaired free of charge by a
KOMATSU ZENOAH
®
authorized dealer.
WARRANTY PERIOD:
1 year (6 months if used profession-
ally, and 30 days if used for rental purpose) from the date of
initial purchase.
THE PURCHASER SHALL BEAR COSTS OF TRANS-
PORTING THE UNIT TO AND FROM THE KOMATSU
ZENOAH DEALER.
THE PURCHASER SHALL NOT BE CHARGED FOR DIAG-
NOSTIC LABOR WHICH LEADS TO THE DETERMINATION
THAT A WARRANTED PART IS DEFECTIVE, IF THE DIAG-
NOSTIC WORK IS PERFORMED AT THE KOMATSU
ZENOAH DEALER.
THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE
PERFORMANCE OF THE REQUIRED MAINTENANCE AS
DEFINED BY THE MANUFACTURER IN THE OWNER/OP-
ERATOR MANUAL.
ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR
REPLACEMENT AS REQUIRED MAINTENANCE, OR
WHICH IS SCHEDULED ONLY FOR REGULAR INSPECTION
TO THE EFFECT OF REPAIR OR “REPLACE AS NECES-
SARY” SHALL BE WARRANTED FOR THE WARRANTY PE-
RIOD. ANY WARRANTED PART WHICH IS SCHEDULED
FOR REPLACEMENT AS REQUIRED MAINTENANCE
SHALL BE WARRANTED FOR THE PERIOD OF TIME UP
TO THE FIRST SCHEDULED REPLACEMNET POINT FOR
THE PART.
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PER-
FORMANCE AND DULABILITY MAY BE USED IN NON-
WARRANTY MAINTENANCE OR REPAIRS, AND SHALL
NOT REDUCE THE WARRANTY OBLIGATION OF THE
COMPANY.
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER
ENGINE COMPONENTS CAUSED BY THE FAIRURE OF A
WARRANTED PARTS STILL UNDER WARRANTY.
THE WARRANTY DOES NOT APPLY TO
THOSE UNITS
WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF IN-
STRUCTION LISTED IN THE OWNER/OPERATOR MANUAL
FOR PROPER USE AND MAINTENANCE OF THE UNITS
ACCIDENT MISHANDLING, ALTERATION, ABUSE, IM-
PROPER LUBULICATION, USE OF ANY PARTS OR ACCES-
SARIES OTHER THAN THOSE SPECIFIED BY THE COM-
PANY, OR OTHER CAUSES BEYOND THE CONPANY’S
CONTROL.
THIS WARRANTY DOES NOT COVER
THOSE PARTS RE-
PLACED BY NORMAL WEAR OR HARMLESS CHANGES
IN THEIR APPEARANCE.
THERE ARE NO OTHER EXPRESS WARRANTIES.
IMPLIED WARRANTIES
INCLUDING THOSE OF MER-
CHANTABILITY AND FITNESS FOR A PARTICULAR PUR-
POSE
ARE LIMITED
TO TWO (2) YEARS OF HOME USE
[ONE (1) YEAR FOR ANY OTHER USE] FROM THE ORIGI-
NAL DELIVERY DATE.
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGE UNDER ANY AND ALL WARRANTIES ARE
EXCLUDED.
IF YOU NEED TO OBTAIN MORE INFORMATION, PLEASE
C A L L Y O U R N E A R E S T S E R V I C E C E N T E R ,
OR CHECK PLEASE KOMATSU ZENOAH WEB SITE
http://www.zenoah.net
