MikeRider

Hello there.

I have got a trike project made of Yamaha XJ900 with a rear axle. It happened to me that it started to have a leak from one of the back wheel areas and after inspection the mechanic responded it's a leak from the bearing. 

Ok. Just replace the bearing. Sorted. He said he can't identify what kind of bearing it is and it has been a few months like this for some try and error attempts. Perhaps I could get some ideas for him here and I can move this issue forward?

I don't have any model maker papers of this trike to look into unfortunately.

Once running, I can hear it, it doesn't run smoothly.

When gear changing it almost stops running [ clutch full on ] or accelerate kinda weird , also [ first almost nothing then power up fast ]

Thought exactly about the fuelling.

Hello.

Would this be a job for the professional or this is home possible, to be done ( with correct tools ) ?

I have watched some youtube.com and doesn't look so complicated, but is it ?

We are talking Yamaha XJ900 (1991y).

Subject of self improvement in servicing skill to discuss.

Thanks.

If I have a bike that's stood for a while and is a stubborn starter I drain the float bowls and allow then to refill, this will also check that the fuel filter isn't blocked. I then pull the plugs and give them a quick clean with a wire brush (checking the condition and gaps while they are out).

I also warm the plugs before I put them back in, just to rule out any cold start issues...any hey presto! it works!

 

I have got the petrol released from carburetor.

It looks pretty disgusting.

Would it idicate the faulty fuel filter working ?

Thanks.

first and foremost....welcome

I would suspect the battery, just because it's charged doesn't mean it's any good.

I would be asking how old the battery is and how flat was it before it was charged.

If you have a multimeter then check the voltage before and after cranking the engine to see how the battery recovers. If not then a simple test would be to put the headlight on, if the light goes dull after a few minutes and doesn't stay as crisp then the battery is duff.

The better the battery, the better the spark

Actually the battery was kinda good condition (12.4) but after some time of trying it dropped to 11.6-5v so I charged it to 12.5-6v levels.

It's basic Halfords motorbike battery but I purchased it brand new together with the motorbike.

It stood like three months. I guess to start with the petrol first but will it make it any better on PRIME ?

Thanks.

Hello,

I'm rookie rider and got it as first motorbike.

I bought my Yamaha XJ900 [1991y] early this year and made a few trips [ aprx 400 miles ], then it stood for a few months.

Fuel is there [ aprx 33% ] and i have charged battery, it spins but it doesn't make the engine running.

What else can be done?

Thanks.