Question about 1989 Yamaha TZR 250

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How do i set the two stroke pump on a early model 3ma,also i have got conflicting reports on deristricting in relation to the ingition ,moveing the pickup .my bike is frame no3ma-007139 it has the carb warmer gone,m max box on the loom,air box rubbers cut,washers gone from pipes,and smaller main jets 180 instead of 200.the inginition is standard i only have the bike a mounth the above mods are done a long time from the looks of things its in fairly good running order butthe power deliverly is very uneven standing still the bike bogs around 7 or 8 thou but once through will rev clean out too the red line ok.the bike will pull out too 180kms ok but the power diliverly is **** in geting there.carbs are clean and ballanced,good quality 2 stroke oil,pipes are coke free and power valves are working corectly,im using ngk br9 plus is this a ingition problem or a carb problem in your oppinion .and is this bike classed as a import model so i know whwt info i pick up is relevant thanks vinny.

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As far as your doubt for poor power delivery its certainly the ignition problem. If you can work on the following for example: all-new exhaust pipe, exhaust power valve, a new ignition curve, and a four gram lighter piston and pin combination the power delivery can be improved.

The particular model you have is very rare a import model.

Thank You

Posted on May 14, 2009


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Selecting Change the priority of this timer will allow the customer to set the priority level of the timer. With the new event highlighted in the Daily Schedule screen (the event will display with the skip icon), press Select. Select Restore and then Yes. The new timer will now have a higher priority level than the conflicting timers.

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Let me know if this help.

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