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Old 09-13-2010, 04:17 PM   #1
Walkin' Dude OP
Puttin' on the Ritz
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Joined: Feb 2008
Location: Minneapolis, MN
Oddometer: 62
Help! Moto Guzzi Convert Drivetrain Trouble?

Say those words and Guzzista's treat you like you have the plague.

Had some top end work done, put about 20 miles on the bike and blew a cruddy old oil line. No problem, right? Swapped in a new oil line and we are on our way! Wrong answer. Engine starts runs fine but no go. The drive will grab a little but then I get nothing. No grinding metal noise from the drive. Changed out the pump hex drive. Pump works fine. I fear it is an internal seal. Anyone who knows Converts doesn't want to work on them. Everyone who doesn't says it's the Convertor. At a loss myself. It's very tough to troubleshoot these big scooters.

I'm at the point, I want to point and pay. Does anybody know of a skilled mechanic who KNOWS & WILL work on a Convert in the Minneapolis area. Next step is paying someone to learn.
Put one foot in front of the other...
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Old 09-13-2010, 04:40 PM   #2
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Joined: Jun 2008
Location: morgantown, wv
Oddometer: 2,270
if the pump works, and you've replaced the hex drive pin, i would think it's the clutch slipping.
current bikes
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Old 09-13-2010, 04:50 PM   #3
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Joined: Oct 2006
Location: Broad Brook CT USA
Oddometer: 1,374
A few crazed Convert riders here.
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Old 09-13-2010, 05:18 PM   #4
The Journey is the Reward
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Joined: Feb 2005
Location: North East USA and sometimes SoCal...
Oddometer: 5,783
Originally Posted by Walkin' Dude
Does anybody know of a skilled mechanic who KNOWS & WILL work on a Convert in the Minneapolis area. Next step is paying someone to learn.
There is a fellow on the WG board that sjc56 talks about that Has a Convert and lives in Minneapolis... Goes by fotoguzzi. No idea if he would qualify as a skilled mechanic or whether he would work on yours but he can certainly help point you in the right direction I would think.

If you cannot locate him (Name is Brad) or you are not a member, let me know and I'll shoot him a PM for ya.

Guzzis and Others...

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Old 09-14-2010, 06:51 AM   #5
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Joined: Aug 2009
Location: Michigan & Tennessee
Oddometer: 116
A few of us Guzzista are enamored of the Converts. A unique and generally rugged and simple machine.

I am assuming that the hose that blew was a transmission line? Did you ride it far after you started to lose ATF? The pump is used to circulate fluid through the converter and oil cooler for cooling purposes. I am also going to assume that you have topped the oil tank back off after you started the bike. If the converter was drained it will take some ATF to fill it.

Like Stainless says, a likely scenario would be a slipping clutch. Although I don't know why it would choose this time to slip. Make sure you have free play at the transmission lever. Other possibilities would be a cooked converter. I have never personally seen or heard of a failed converter though. Otherwise, I can't think of any other reason why it would start to move, but not fully engage. If it's not an issue with fluid flow into the converter, or a clutch adjustment, the bike is probably going to have to come apart though.

I don't believe that a leaking seal would cause this problem. Not without a big pool of ATF under the bike!

It would be good if you could get in touch with Brad. He is very familiar with Converts. If he wasn't interested in fixing it, I'm sure he could point you in the right direction.

Good Luck!

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Old 09-14-2010, 07:17 PM   #6
Joined: Oct 2007
Location: Western MD
Oddometer: 721
Originally Posted by sjc56
A few crazed Convert riders here.
A bunch more here:
'69 Guzzi Ambassador,'77 Yamaha XT500,
'88 Ducati Paso, '91 ATK 604
'94 MZ Silver Star, '96 CCM 350
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