wsm L3301 Workshop Manual page 221

L3301, L3901, L4701, WSM
Confirmation of Crank Position Sensor Top Dead Center
Detection Position
1. Align the 20th pulsar hole (5) from the area where there is no
pulsar hole (1) on the outer circumference of the flywheel (2)
with the crank position sensor mounting hole (4) on the flywheel
housing (3).
2. Insert a special tooling injection timing top correction handle (6)
into the crank position sensor mounting hole and align the
center of handle and pulsar.
3. This position is the crank position sensor top dead center
detection position, so set the tri-square (7) on the reference line
(9) as mentioned in the previous item and put a mark for crank
position sensor detecting top dead center position (10) on the
flywheel.
(1) Area where there is no pulsar hole
(2) Flywheel
(3) Flywheel Housing
(4) Crank Position Sensor Mounting
Hole
(5) 20th Pulsar Hole
(6) Injection Timing Top Correction
Handle
Fuel Injection Timing Correction Amount
The difference A between the top dead center mark (1) and the
crank position sensor top dead center detection position mark (2) is
the correction amount for fuel injection timing.
Calculate the correction value referencing the following and
using a diagnostics tool, overwrite the injection timing correction
amount in the "data overwrite/confirmation".
(Reference)
• 1 mm: 0.28 °
• If the crank position sensor top dead center detection position is
in front of top dead center, enter a negative value.
• If the crank position sensor top dead center detection position is
in back of top dead center, enter a positive value.
(1) Mark for Top Dead Center
1-S58
ENGINE
(7) Tri-square
(8) Reference Line
(9) Mark for Top Dead Center
(10) Mark for Crank Position Sensor
Detecting Top Dead Center
Detection Position
9Y1211012ENS0065US0
(2) Mark of Crank Position Sensor Top
Dead Center Detection Position
9Y1211012ENS0066US0
KiSC issued 09, 2016 A