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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Oil filter cover thread stripped, exact size please
Post Info TOPIC: Oil filter cover thread stripped, exact size please
oshanrube


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Oil filter cover thread stripped, exact size please
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hi, 

 

few days ago when i was servicing it stripped the crank case thread and now theres only few thread left. i tried to retap the thread with my local mechanic but theres no thread left, the only option for him is to replace with a bigger size. next option for me is to order a tap kit from ebay. so i checked on boats net and this is the diagram i got and the part number is 91317-06020-00 but that part number doesnt specifically say the thread, pitch and length because it belongs to multiple bolts. 

 

so can someone please give me these info, 

thread (m5/m6)

pitch (0.8 or 1)

5d547n.png

thank you in advance



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TTRfan


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See here - M6x1.0 

Cover bolt info below:

Clutch and generator covers.jpg

Clutch and generator covers bolts data.jpg

 

Brian



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petenz


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Tap it for 1/4UNC... don't drill the hole , run the tap in the striped hole
1/4 is 6.4mm


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BM Steve


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Hey there oshanrube

Just wondering why you wouldn't put a Heli-Coil in there ?, I had a stripped thread in one of the front axle fork bolts, dropped in a Heli-Coil and now it's as good as new

 

Hi Petenz, just curious but why you would advise a 1/4 UNC and not a metric thread ?  Is 1/4 UNC a but bigger than M6 ?

Everyone is sure to have a M6 bolt somewhere in the shed

Cheers All



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2004 TTR250 - Highway Dirtbike Hand Guards, 38mm Bar Risers, D606 Front & Rear, Opened up Airbox with Twin Air Filter, Re-jetted Carby, B+B Bash Plate & Frame Guards, DIY 3mm Alloy Tail Tidy, 14/47 Gearing.

 
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