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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Carb'
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<blockquote data-quote="cinquecento" data-source="post: 45171" data-attributes="member: 2979"><p>My goodness this little b*ggers been testing me today. Second shake down run after rebuilding top end and only hving aquired the machine several hundred miles previously.</p><p></p><p>After first short run 15 - 20 miles it was tighten up head oil feeds and leaks to inspection caps. Today having stopped after 3 - 4 miles to get fuel could I get the b*gger started, plug in,plug out, plug changed. Called recovery service after 30 odd min’s . Then with a bit more effort the b*gger fired up.</p><p></p><p>Cancelled recovery and headed back, had a mooch around it appears that the inlet rocker was slack. I had checked and rechecked when assembled as I was a little twitched about the the push rod not being properly seated in the cam follower. Anyhoos, adjusted checked and she fired up, I shut her down and tried to start again: everything sweet. Why not have a simple ‘rotate the pushrod ‘ like HD machines, to say ‘take up fore and aft movement’ does not inspire confidence in machining tolerences as there ought only to be up and down movement surely.</p><p></p><p>However, one thing that is apparent is the carb is p*ssing fuel, hopefully the pic has attached below. It seems that at the base of the carb’ body there is a screw on base that holds the main jet. I’m reluctant to unscrew at the mo’ as I don’t want to put force on the carb’ body while fitted to the manifold.</p><p>Any comments on what appears to be a chip pointed out by the red pointer or is this some kind of pilot air hole, also is there a gasket where the base screws to the carb’ body ?</p><p></p><p>Thanks in advance.</p><p>[ATTACH]1958[/ATTACH]</p></blockquote><p></p>
[QUOTE="cinquecento, post: 45171, member: 2979"] My goodness this little b*ggers been testing me today. Second shake down run after rebuilding top end and only hving aquired the machine several hundred miles previously. After first short run 15 - 20 miles it was tighten up head oil feeds and leaks to inspection caps. Today having stopped after 3 - 4 miles to get fuel could I get the b*gger started, plug in,plug out, plug changed. Called recovery service after 30 odd min’s . Then with a bit more effort the b*gger fired up. Cancelled recovery and headed back, had a mooch around it appears that the inlet rocker was slack. I had checked and rechecked when assembled as I was a little twitched about the the push rod not being properly seated in the cam follower. Anyhoos, adjusted checked and she fired up, I shut her down and tried to start again: everything sweet. Why not have a simple ‘rotate the pushrod ‘ like HD machines, to say ‘take up fore and aft movement’ does not inspire confidence in machining tolerences as there ought only to be up and down movement surely. However, one thing that is apparent is the carb is p*ssing fuel, hopefully the pic has attached below. It seems that at the base of the carb’ body there is a screw on base that holds the main jet. I’m reluctant to unscrew at the mo’ as I don’t want to put force on the carb’ body while fitted to the manifold. Any comments on what appears to be a chip pointed out by the red pointer or is this some kind of pilot air hole, also is there a gasket where the base screws to the carb’ body ? Thanks in advance. [ATTACH]1958.vB[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Carb'
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