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mvent
 Post subject: H2 running issue
PostPosted: Wed Jul 11, 2018 8:49 pm 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 168
Location: Rhode Island
Looking for advise, 72 H2, running part throttle and under 4K RPM, RH plug will load up and bike will run on 2 cylinders until I twist throttle wide open over 4-5k RPM then it pulls at it should on all cylinders. RH pipe seems to smoke more than the other 2. Bike has Lakeland ignition with original coils and ignition wires. Any and all advise welcome.

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72 H2, 76 XLCH, 78 KZ1000, 99 ZRX, 04 120ci Fatboy
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mraxl
 Post subject: Re: H2 running issue
PostPosted: Wed Jul 11, 2018 9:19 pm 
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Joined: Tue Jun 07, 2011 6:36 am
Posts: 2694
Location: Dandridge, TN, USA
Likely carb issue... swap carbs to confirm.

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Ja-Moo
 Post subject: Re: H2 running issue
PostPosted: Thu Jul 12, 2018 1:41 am 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 10460
Location: Rio Rancho, New Mexico
Check your transmission oil level, you may have a trashed crank seal. And you can fry your trans also.

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........
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tankie
 Post subject: Re: H2 running issue
PostPosted: Thu Jul 12, 2018 10:34 am 

Joined: Thu Jun 09, 2011 1:12 am
Posts: 238
Location: Queenborough U.K
As Moo says , and also check fuel float levels on that R/H carb
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mvent
 Post subject: Re: H2 running issue
PostPosted: Thu Jul 12, 2018 11:55 am 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 168
Location: Rhode Island
Thanks for replies, does anyone have link to YouTube video showin RH seal replacement? TIA

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72 H2, 76 XLCH, 78 KZ1000, 99 ZRX, 04 120ci Fatboy
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Ja-Moo
 Post subject: Re: H2 running issue
PostPosted: Thu Jul 12, 2018 3:35 pm 
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Location: Rio Rancho, New Mexico
I only did the left, the right is pretty much the same. If you are very careful you can remove the cover without undoing the oil lines from the pump, just unbolting the pump.

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........
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mvent
 Post subject: Re: H2 running issue
PostPosted: Sun Jul 29, 2018 7:30 pm 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 168
Location: Rhode Island
Update on running issue. Changed spark plug caps to non resistor NGK, went with iridium plugs, lowered needle to center groove ( was on 2nd from bottom) reset float levels, runs much cleaner. Right hand pipe still smokes more than other 2 and trans fluid level did go down a bit during 70 mile ride, but I don't use this bike much just plan on keeping an eye on trans level for time being.
Thanks for all the advise.

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72 H2, 76 XLCH, 78 KZ1000, 99 ZRX, 04 120ci Fatboy
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Hawaii-Mike
 Post subject: Re: H2 running issue
PostPosted: Mon Jul 30, 2018 2:23 am 

Joined: Tue Jul 24, 2012 6:06 pm
Posts: 1137
Location: Honolulu
Right side crank seal replacement takes a bit of work but you will be happy with the result.
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Jim
 Post subject: Re: H2 running issue
PostPosted: Mon Jul 30, 2018 3:12 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9840
Location: North Central NC
Hawaii-Mike wrote:
Right side crank seal replacement takes a bit of work but you will be happy with the result.


Right, and it can be done with the crank in if you want to. Have you done a crank seal test to check all of them?

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Hawaii-Mike
 Post subject: Re: H2 running issue
PostPosted: Tue Jul 31, 2018 1:19 pm 

Joined: Tue Jul 24, 2012 6:06 pm
Posts: 1137
Location: Honolulu
Here's John's video showing the left side seal replacement. Right side is more complicated because of the clutch cover, oil pump etc. Still it's an easy job, maybe 4 hours for a novice. https://www.youtube.com/watch?v=jfqhY2RF2c4
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