OutdoorKing Repair Forum Forums Repairs and Maintenance Questions On Ride On Mowers Questions On Ride On Mowers Frames Ride-on Replacement Engine - seanw

the piston has stopped moving up...

Assuming all else is OK (not seized): broken piston/gudgeon pin/conrod/big end bearing?

If the valves don't move either, possible broken crankshaft?

If the top flywheel spins but not the rest of it, sheared key?

It looks to be in pretty good condition Sean well worth putting a new motor in it. You can get new 13 hp motors for about $400

This is going to be one of those Sean gotcha moments I bet. Once enough spinners have come in he'll post some photos with the bonnet up to show the engine has thrown a leg out of bed and the conrod is sticking out of the block somewhere for sure.

To be sure, to be sure, it is a Sean thing. Did you buy it Sean or are you fixing it for somebody. I suppose somebody gave it to you

Red ones just go faster...

Probably right, was wondering why he'd gone quiet for a while... But I'm happy to bite, it's always entertaining...

maybe I'm being silly and the piston's just at TDC?

Or as in the pic the motor is turned off

Maybe the piston has gone out in protest over being associated with such a flimsy piece 'o shyte.

oh how we laughed.
any secrets to getting this off?

just a matter of undoing the large bolt in the middle and the two torque screws and levering off?
it is not mine and i dont want to break anything.
thanks for the assistance
sean

Not sure there Sean, the torx screws are possibly holding the wheel to some flange fitted to the shaft, you can only try removing them and the stud and see what happens. If you are going to lever it up, go carefully. If it doesn't appear to move will have to rethink the situation. What motor is it?

thanks norm
this is the keyway


as the flywheel still moves the shaft i am assuming that this is more of an internal issue as pitrack kindly pointed out. i will start with the rocker cover removal, to rule our broken crankshaft. then go from there. am i correct in saying that that key didnt look to healthy.
thanks fellas

Ok now you will have to make up a puller to fit in the torx screw holes with a bolt through the center to push on the crank. The key damage won't be causing any issues, what actually is the problem, is the crank locked up? any oil in the motor?You won't find much looking at this part of the motor, you need to pull the head off and have a look inside

thanks mate. i have come to the conclusion that this motors big end has a problem, i heard tell that i may be able to get a replacement for 400 dollars. pray tell where norm. the parts for this are quite pricy but the time involved to pull it apart to find the source of the problem is another thing. I am trying to help this fella. for free. yes i know it is not the flashest machine but he seems to love it??
thanks all
Sean

Sean I'm pretty sure this mob ship interstate, I'm sure I put a bloke in QLD onto them and they shipped no problems and it wasn't expensive, I think it cost about $40.
Mower looks to be in reasonable shape so well worth sticking a new motor on it

http://www.ebay.com.au/itm/13HP-VERTICAL-SHAFT-ENGINE-MOTOR-RIDE-ON-MOWER-NAME-BRAND-/331789844922?hash=item4d403741ba:g:I6oAAOSwR0JUPNZB

thanks again norm.
no crotchet tonight, maybe later.
only met this machine today. in my opinion the crankshaft is phucked,due to the smashed conrod banging in to it. i am still of the belief that this mower was run with low black oil and cooked. any diagnosis would be awesome.
the young fella that has blown his mums ride on i spinning out
sean

Sean, no oil will do it every time, sorry I can't help with a cheap fix because there isn't one and I'm sorry for the young bloke

With Norm there, quite likely it was low/out of oil. Ask 'em when they last did the oil change or checked the level, when you get the 'huh?' you'll know for sure. Although I'm sure you saw what oil (or remains rhereof) came out when you opened it.

Mowing on a steep slope a lot can also do it 'cos it won't throw the oil around properly, exacerbated by low/old oil further.

Even if the son was trying to prove 'red ones go faster' if Mummy hasn't been maintaining her equipment it's not entirely his fault.

I think best answer is Norm's and Mum's more likely to stump up the $$$ if you can get her to think it's partially her fault. You've got a good manner, Sean, I reckon you can probably pull it off. You can point out the importance of oil with the broken conrod (whoops that's my usual baseball bat diplomacy shining through again )

Although you may need to check the replacement carefully for compatibility- controls match up, alternator/charging, key start or not, etc.

Not to mention the output shaft. Start with the motor model no and work from there- check with the motor vendor?

Patrick, good point, most of them are usually stated as Briggs and Stratton compatible and they all have a 1 inch shaft. It is only the smaller capacity ones to fit push mowers that have the 7/8 inch shaft

Parick, just another point I'm curious about regarding the ride on mower motors is the bigger hp ones, the ones above 13hp. Do they retain the same bolt pattern, I think the would need to go to a bigger pattern because the overall dimensions of the crankase must be bigger. I guess the boys playing with the mower racing scene would know, bigger motors fitted to smaller machines

Hi Norm,
these bigger B&S motors are well beyond my experience.

i have a plan...


loncin chinese, same bolt on as bns. well thats what they say. has anyone got any experience with these motors??

20hp is a big motor Sean, what size motor was in it, probably 13 hp, you can get those new for $400. I would think with the bigger motor you would have issues with the bonnet not fitting. I haven't used one of those motors yet but they seem to sell a lot so I guess they are fit for purpose

their just shite sean..
they should contain a "BUYER BEWARE " sign on them.
they will have the same bolt patten as the briggs, whether it
fits under the bonnet will depend on exhaust placement etc.
my advice for what it's worth.......
get yourself a S'H BRIGGS and save yourself from...

So Squizzy, have you used one of these motors, I want to know before I buy one. Second hand Briggs don't come up often and I personally would be very wary of one, why would anybody pull a good running Briggs off a mower in the first place? Always plenty of mowers for sale with blown motors so there will always be a shortage of them

thanks fellas, i have spoken to the owner and he doesnt mind "modifying" his bonnet to get a bigger power plant on. I just have to look into if the bolt configuration is the same. it says so in its advertisement. But i would really like to be sure
cheers again fellas

i woudn't own one if you gave it to me Norm.
they are so poorly made and usually have no spares back up,
they are purely imported to sell to suckers thinking their getting a good deal.
sorry if it sounds harsh, but from experience i can't not tell it as it is.
as i said, BUYER BEWARE!!!
the old briggs are made to rebuild and there's still plenty of spares out there for them,
i would ALWAYS use a good/rebuilt briggs before one of those things
your right to sean, there's plenty of 'non operating ' ride ons out there, and many have perfectly good motors on them!

Squizzy I sure wish I could find some of those 'non operating' ones with good motors. I watch the ones on ebay all the time and I can't believe the prices some of the junk goes for. It is one big gamble to pick this stuff in the hope the motor is going to be ok