Chili

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Apr 9, 2002
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Was going through the maintenance log we keep for my son's 250F and started to wonder am I keeping a reasonable maintenance level or developing OCD?

The bike has 58.1 Hours on the meter and so far we have changed the oil 22 times, changed the air filter 31 times and changed the oil filter 9 times. Valves have been checked 3 times and the piston and rings replaced once at the 45 hour mark.

One item of interest, everyone bags on the stock chains, we've only had to tighten the chain 3 times in those 58.1 hours.

Do I need help or is this a fairly normal schedule for the rest of you? :laugh:
 

mmz77

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Oct 15, 2006
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Yeah that sounds a little overkill with maintenance. Best to do it more often and keep the bike lasting!
 

Rich Rohrich

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Jul 27, 1999
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Chili said:
Was going through the maintenance log we keep for my son's 250F and started to wonder am I keeping a reasonable maintenance level or developing OCD?

The bike has 58.1 Hours on the meter and so far we have changed the oil 22 times, changed the air filter 31 times and changed the oil filter 9 times. Valves have been checked 3 times and the piston and rings replaced once at the 45 hour mark.

One item of interest, everyone bags on the stock chains, we've only had to tighten the chain 3 times in those 58.1 hours.

Do I need help or is this a fairly normal schedule for the rest of you? :laugh:

Sounds about right on oil and airfilter maintenance, and kind of long on piston and rings. The fact that you got 58 hours and needed only 3 adjustments on the stock chain, proves you are doing something right. :cool:
 

_JOE_

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May 10, 2007
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IndyMX said:
Nope, and by now you'd think something was wrong if I did!
We all KNOW something is wrong with YOU Indy. :nener:


Chili, your maintenance sounds about the same as mine. Start watching the valves a little closer maybe. I never ran the stock so I wouldn't know. I put an X-ring on cause I live in Mud-City USA. ;)
 

whenfoxforks-ruled

Old MX Racer
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Oct 19, 2006
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Merrillville,Indiana
The big difference between riding and racing. Honestly Chili, you have been getting off really easy. How many races is that? Clutch, tires, linkage and steering bearings. 58 hours, plastics and suspension fluid for sure! How are the spokes rims and brakes doing? Maintenance junkie no, staying on top of it, yes!
 

Chili

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Apr 9, 2002
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Rich Rohrich said:
Sounds about right on oil and airfilter maintenance, and kind of long on piston and rings.

I was thinking the same thing and should really have done the piston in the off season at 35 hours. That being said the top end that came out looked like new although I did not mic the piston.


whenfoxforks-ruled said:
The big difference between riding and racing. Honestly Chili, you have been getting off really easy. How many races is that? Clutch, tires, linkage and steering bearings. 58 hours, plastics and suspension fluid for sure! How are the spokes rims and brakes doing? Maintenance junkie no, staying on top of it, yes!

That was not a complete list of everything done to the bike just the basics.

Those 58 hours would cover 13 or 14 races. Suspension was done on original purchase and then redone at 35 Hours by Jeremy Wilkey as we weren't happy with the original revalve by a different tuner. Bearings were done at new and again at 35 hours in the off season.

He's on his second set of plastic and I honestly haven't a clue how many tires he's been through but having a second set of wheels keeps it to a minimum as he gets about 6 races to a race tire before it ends up on the practice pile.

Clutches are another matter, the 2007 RMZ250 has/had some clutch issues. I would say we've had one truly worn out clutch and three that have been changed out in pieces after fragging two clutch plates on three different occasions.
 

whenfoxforks-ruled

Old MX Racer
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Oct 19, 2006
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Merrillville,Indiana
It all goes back to how fast are they. Being able to deal with Jeremy or Brandon personally is priceless. Have you checked out any of Brandon's handy work with head work? The kid has a gift! How did you settle the clutch plate issue? If slipping too much was the problem, I know a guy who is one of Jeremy's spring suppliers. He has some stronger springs, put 2 of them in and bye bye slipping. The pull does not get too noticeable. Or put a hydraulic perch on it. I know some real expensive trans oil that will eliminate wear on the plates. At 15 to 20 dollars a quart! Are you running stock compression? 13 or 14 races is what we would usually end up at this time of year, barring injuries, 30 races is a good year outdoors!
 

Chili

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Apr 9, 2002
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We have a 16 race season up here. Suzuki changed the clutch configuration halfway through last year and added a couple of washers and a thicker first steel plate as well as longer springs to take up some of the slop.
 
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