1974 Yamaha MX250 A

SOURCE: 97 yamaha thunderace fork oil capacity

270mls per leg, or 280 if you want a little stiffer ride

SOURCE: what is the oil to fuel mix ratio for a 1974

I seem to remember that they were oil injection, and had a tank seperate for oil, but...32:1 will work if it's pre-mix, just jet the carburator to match that and you will be fine.

SOURCE: ENGINE OIL CAPACITY

On the oil filler port is a number with CC after it. This is the crankcase capacity in cc. There are 946cc in one US quart. Do not neglect to fill the filter with oil (but do not overfill) before installing it, and do not consider that amount when filling the crankcase.

Hope this helps,
matt

gavin jones

• 1508 Answers
• Posted on May 28, 2010

SOURCE: oil capacity????

aprox 1.1 litres, but depends if filter is changed, and all the oil is drained.
You need to run the bike for a minute before dipping the oil

Murtaza Akberali Versi

• 767 Answers
• Posted on May 31, 2010

SOURCE: oil capacity?

Should be 3.5 Liters / quarts with the filter change. Put in 3 liters then top up as needed to get the level to the top of the viewing window.

To check your oil, bike should be level, on it's center stand, engine should NOT be running!

Any oil viscosity between 10w30 and 20w50 will work just fine. Smaller numbers if the weather's cooler and/or you only do short rides. Bigger numbers for hot weather and longer rides.