TOHATSU NB-1000 Service Manual page 41

SECTION 2
5 Models
Throttle Setting
Engine
5
The magneto of the 5 engine uses an "electrical lead angle" where
ignition timing is advanced as engine RPM increases.
1
1. Start engine and check ignition timing using a timing light.
2. Two marking lines are cast on top of the flywheel,
2 3
topand lead angle: BTDC 30°.
Item
1 Top Marking
2 Matching Surface of Crankcase
3 Full Lead Angle Marking
3. Check the matching surface of the crankcase.
2-32
Full Open
Match Mark Target RPM
BTDC 30° 4500 - 5500
Description
Full Closed (In Gear)
Match Mark Target RPM
BTDC 5°
1
3
850
T1969
T1970
T1805
1-/ 2-Cylinder