Ignition Timing - BOMBARDIER Skandic 377 IR Shop Manual

SECTION 04 ELECTRICAL
SUB-SECTION 02 (IGNITION TIMING)
IGNITION 'TIMING
BREAKER POINTS IGNITION SYSTEMS
247 ENGINE TYPE
Two methods are detailed in this section; the first using
the timing marks, stamped on the engine, the second
using a Top Dead Center gauge.
Timing marks procedure
1. Disconnect spark plug wire and remove spark plug.
2. Remove rewind starter assembly from engine then
remove the starting pulley from magneto ring.
3. Rotate crankshaft until breaker points, visible through
magneto ring opening, are fully opened. Adjust points
gap to 0.35-0.40 mm (0 .014-0.016") using a feeler
gauge and a screwdriver as illustrated.
O
NOTE: Breaker points gap can change upon tight-
ening. Always recheck after tightening.
4. Disconnect junction block at engine then connect one
klead of a timing light (flashlight type PIN 4140122
00) to the blue wire leading from engine. Connect
other to ground (metallic portion of the engine).
5 . Turn timing instrument ON and rotate crankshaft un-
til timing marks align. Slacken the three (3) armature
plate retaining screws then rotate armature plate until
timing light fluctuates.
Retighten retaining screws at this position.
Too early Too late
Turn armature
Turn armature
plate clockwise plate counter-clockwise
O NOTE: Ignition timing can change upon tightening .
Always recheck after tightening.
Top dead center gauge procedure
1. Disconnect spark plug wire and remove spark plug.
2. Remove rewind starter assembly from engine then
remove the starting pulley from magneto ring.
3. Rotate crankshaft until breaker points, visible through
magneto ring opening, are fully open. Adjust points gap
to 0.35-0.40 mm (0.014-0.016") using a feeler
gauge and a screwdriver as illustrated.
O
NOTE: Breaker points gap can change upon tight-
ening. Always recheck after tightening.
4. Disconnect junction block at engine then connect one
lead of a timing instrument (flashlight type PIN 414
012200) to the blue wire coming from engine. Con-
nect other to ground (metallic portion of the engine).
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