1970-1979 Ski-Doo Snowmobiles Service Manual, Page 55Get this manual

1970-1979 Ski-Doo Snowmobiles Service Manual, Page 55

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48 Lug Damage Lug damage as shown in Figure 22 is caused by lack of snow lubricationRatcheting Damage Insufficient track tension is major cause of ratcheting damage to the top of the lugsSee Figure 23