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FJR Motorcycle Forums
Technical & Mechanical Problems
Changing the CCT (Cam Chain Tensioner)
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<blockquote data-quote="ionbeam" data-source="post: 759805" data-attributes="member: 277"><p>Thanks to the wonder of gear ratios. The starter motor and the actual starter gear that spins the motor have a large step-down ratio that multiplies torque in a big way. Not only were zero valves within clearance spec, most of them did not move when the cam turned.</p><p></p><p>Once there was slack in the cam chain the crushed valve saga clearly started at the crank gear. When the lower cover was removed to look at the crank gear we found that the chain was completely off the gear! This caused a small heart attack over the fear that the non-replaceable crank gear may have been damaged.</p><p></p><p>FJR98008's finding all the valves to be within spec is a really good omen.</p></blockquote><p></p>
[QUOTE="ionbeam, post: 759805, member: 277"] Thanks to the wonder of gear ratios. The starter motor and the actual starter gear that spins the motor have a large step-down ratio that multiplies torque in a big way. Not only were zero valves within clearance spec, most of them did not move when the cam turned. Once there was slack in the cam chain the crushed valve saga clearly started at the crank gear. When the lower cover was removed to look at the crank gear we found that the chain was completely off the gear! This caused a small heart attack over the fear that the non-replaceable crank gear may have been damaged. FJR98008's finding all the valves to be within spec is a really good omen. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Changing the CCT (Cam Chain Tensioner)
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