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Sym JET 100 series User Manual

Sym JET 100 series
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21
10.Inspection and maintenance before riding
TRANSMISSION OIL INSPECTION AND CHANGE
INSPECTION:
! Use the main stand to support the scooter on a level ground, after the engine stops, wait for 3~5
minutes. Remove the transmission oil infusion bolt, put a measuring glass under the drain bolt, and
remove the drain bolt. Let the oil flows into measuring glass and check for decreased or not. (at
disassembly: 120 c.c. / at change: 100~110 c.c.).
OIL REPLACEMENT:
! Stop the engine and use the main stand to support your scooter on a level ground. Remove the
infusion bolt and drain bolt, drain out the oil.
! Install the drain bolt and tighten it. Fill new transmission oil (100~110 c.c.), and install the infusion
bolt and tighten it. (make sure that bolts are tightened and check that there’s no leakage.)
Recommend Oil: Genuine SYM HYPOID GEAR OIL (SAE 85W-140).
Use SAE85-90 when outside temperature is below 0.
INSPECTION AND ADJUSTMENT OF BRAKE FREE PLAY
INSPECTION: (Brake lever free play must be checked with the engine shut off.)
! Brake lever free play for front and rear wheels
When checking the hand-braking lever for front
and rear wheels, its free play (the stroke of
hand-braking lever from no braking to initial
braking) should be 10~20mm.
It is abnormal if the feel is spongy when holding
the hand-braking lever forcefully.
Adj
ustment:
! The indentation of brake adjustment nut must
be aligned with the pin. (see right figure)
CAUTION:
! When free play is between 10~20 mm, check
brake indicators of front and rear wheels. If
the arrow on the brake arm aligned with the
” marked on the brake disk, that means
the brake lining has been excessively worn,
and must be replaced immediately.
! Turn the adjustment nut on brake arm of front and rear wheels to adjust the free play of hand-brake
lever.
! Hold the hand-brake levers after adjusting with both hands until there is effective brake feeling.
! Measure the free play with a rule.
10~20 mm
Pin
Adjustment nut

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Sym JET 100 series Specifications

General IconGeneral
Fuel SystemCarburetor
Front SuspensionTelescopic Fork
Rear BrakeDrum
Cooling SystemAir-cooled
TransmissionAutomatic
Engine Type4-Stroke

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