BOMBARDIER 1996 Ski-doo MX Z440 Handbook page 121

, F01D5VS
1. Combustion chamber(VJ
2. Liquid mixture 2threads
o
NOTE : When the combustion chamber is filled to top of spark plug hole, subtrack
2.25 cc (19 mm reach head; i.e. BR9ES spark plug). Check if fluid level decreases, in that case
there is a leak between piston/ cylinder. The recorded volume would be false.
Removing the head and measuring the head volume by laying a flat plate across the head will not
give an accurate measurement of combustion chamber volume because the dome of the piston
protrudes into the head on an assembled engine.
Section ENGINE PREPARATION
04
04-19