1985 Ski-Doo snowmobile Service Manual, Page 189Get this manual
Sub-section 09
Section 02 ENGINE (537 ENGINE TYPE)
The ground terminal from generating coil must be fastened under this clip
A001Q02005
CAUTION: Before reinstalling magneto remove the loose epoxy from harness
ASSEMBLY
1,7,15,16,17, Armature plate, Loctite 242, washer, lock washersscrews