KYMCO PEOPLE S 125 Service Manual

1. GENERAL INFORMATION
1-21
PEOPLE S 4T
ENGINE LACKS POWER
Clogged air cleaner
Restricted fuel flow
Clogged fuel tank cap breather
hole
Clogged exhaust muffler
Faulty auto bystarter
Split carburetor vacuum piston
diaphragm
Faulty auto fuel valve
Faulty CDI unit
Faulty pulser coil
Improper valve clearance
adjustment
Worn valve seat (valve stem too
protruding
Improper valve and seat contact
Worn cylinder and piston rings
Leaking cylinder head gasket
Improper valve timing
Clogged carburetor jets
Fouled spark plug
Incorrect heat range plug
Oil level too high
Oil level too low
Oil not changed
Clogged oil pipe
Faulty oil pump
Worn cylinder and piston rings
Mixture too lean
Poor quality fuel
Excessive carbon buildup in
combustion chamber
Ignition timing too early
Excessive carbon build-up in
combustion chamber
Poor quality fuel
Clutch slipping
Mixture too lean
Ignition timing too early
Start engine and
accelerate lightly for
observation
Inspection/Adjustment
Symptom
Probable Cause
Engine speed
increases
Correct timin
g
Engine speed does
not increase
sufficiently
Incorrect timin
g
Check ignition timing
(using a timing light)
Test cylinder
compression
Check carburetor for
clogging
Rapidly accelerate or
run at hi
g
h s
p
eed
Remove spark plug and
ins
p
ect
Check if engine
overheats
Check valve clearance
Correct
Incorrect
Normal
com
p
ression
Abnormal
compression
Remove oil dipstick and
check oil level and
condition
Remove cylinder head
oil pipe bolt and inspect
Engine overheats
Engine does not
overheats
Plug not
f
ouled or
discolored
Plug
f
ouled or
discolored
Correct and not
contaminated
Incorrect or
contaminated
Valve train lubricated
properly
Valve train not
lubricated properly
Engine does not knock
Engine knocks
Not clo
gg
ed
Clo
gg
ed

KYMCO PEOPLE S 125 Specifications

General

Displacement	124.6 cc
Front Suspension	Telescopic Fork
Cooling System	Air Cooled
Max Torque	10.4 Nm @ 6500 rpm
Transmission	CVT
Front Brake	Disc