Fouled plugs

[Boo]

Here's something to read, most off road bikes have the carbs/fuel injection running on the rich side, to give better throttle response, hence dirty fueled up plugs.

Yes all manufactures specify jetting that is to rich because they don't want you to blow it up and blame them. Temperture, humidity and elevation change jetting, either to rich or lean.
Run 33.1, do a plug chop and go from there, looks to me you could run one jet down on the pilot, is it bubbly when you go from 0-1/4 throatle, running rich is not a bad thing but when its fouling plugs it could go a tad leaner. Whats the compression like.

[Boo]

Here's something to read, most off road bikes have the carbs/fuel injection running on the rich side, to give better throttle response, hence dirty fueled up plugs.

Yes all manufactures specify jetting that is to rich because they don't want you to blow it up and blame them. Temperture, humidity and elevation change jetting, either to rich or lean.
Run 33.1 and 98 from BP, do a plug chop and go from there, looks to me you could run one jet down on the pilot, is it bubbly when you go from 0-1/4 throatle, running rich is not a bad thing but when its fouling plugs it could go a tad leaner. Whats the compression like.

[eelracing]

Plug is a ngk br8eg

Bike is a rm250 2009.
Last time riding was my first time on it, so was lugging it round and getting used to the bike which I suspect could be a cause of it.

What would be the best way from here seeing as I am not going to be ringing it's neck for a bit of time til I get back up to speed? Would changing the jetting bit help? Leaning low speed jets etc?

Mate for now chuck in a new plug and turn the carbs air screw out (anticlockwise) half a turn from standard.
Standard air screw setting for the RM is one turn out.
Turning it out will increase the airflow therefor leaning out the idle to 1/4 throttle air/fuel mixture and hopefully no more fouling.

It's good two stroke practise to always carry a spare plug on any ride.See how you get on.

[gammaguy]

Plug is a ngk br8eg

Bike is a rm250 2009.
Last time riding was my first time on it, so was lugging it round and getting used to the bike which I suspect could be a cause of it.

What would be the best way from here seeing as I am not going to be ringing it's neck for a bit of time til I get back up to speed? Would changing the jetting bit help? Leaning low speed jets etc?

It was built by the factory as a race bike not for someone to pop down to the shops on

Either ride it the way it is designed to be ridden or buy a peewee.

Read the manual if you want to jet out for bumbling around on, but don't forget to change things back when you start to ride it hard

[Blagger]

This pic was originally produced by Champion IIRC - I've seen it stapled to plenty of garage walls

May be of some assistance