Specifications

When tightening the lug

nuts, use the correctly sized

wrench. e wrong size can

round oﬀ the lug nuts and ren-

der them useless. If you lose

a lug nut, replace it promptly.

e correct size varies with

diﬀerent models, so verify the

proper size with an authorized

MasterCraft dealer.

Take special care to ensure

that the replacement lug nut

is the correct type. While the

threads of the lug nut may

match, it may be a size that

does not hold the wheel secure-

ly against the hub, even when

fully tightened. Be certain a

replacement lug nut is an exact

match for the original.

• Ensuring that lug nuts on

trailer wheels are tight

and properly torqued is

an important responsibil-

ity that trailer owners and

users need to be familiar

with and practice. Inade-

quate and/or inappropri-

ate lug nut torque (tight-

ness) is a major reason

that lug nuts loosen dur-

ing use. Loose lug nuts

can rapidly lead to a wheel

separation, with poten-

tially serious safety consequences.

• Check the lug nut tightness often, especially during the ﬁrst few hundred

miles of the trailer’s use. You should always check torque at the beginning

of any long trip and every time a wheel is removed.

• You must use a torque wrench to accurately indicate the amount of torque

that you are applying to the lug nut. Fore-way wrenches, ratchets, and simi-

lar tools can be useful for short-term emergency repairs but are not appro-

priate tools for accurately checking lug nut torque.

• Keep a record of the date and approximate mileage when the lug nut torque

is checked. Note any lug nut(s) that lost torque. Investigate the reason(s) if

MasterCraft Trailer Manual • Page 15