Needs overhauling - Toro 42'' Zero Turn Lawn Mower Trailer Package Deal ()

Yes, that normally does mean air in the system. It sounds like you need a good brake system overhaul, at least new rubbers at each wheel caliper and in the master cylinder. If there has also been water in the system for a while, you may find there is enough corrosion to require replacements instead of overhaul.
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if the cylinder head is the problem just replace it, but the leaking could just be from faulty head gasket you dont need it overhauled, all it needs to be done is take the cylinder head out put new head gasket

That is a question you ask a trans repair shop

Depends on wether you pull it or they do & what needs
to be done

Low side adjustment on the carb needs to be opened up or the carb needs to be overhauled. To open up the low sie, find the carb jet adjustment screws. The screw closest to the cylinder is the low side. Turn the screw counter-clockwise 1/2 turn. You may need to romove tho plastic locks from the adjustment screws, or if it is fairly new, you may need to buy a special tool to use on these screws. The tool is available anywhere that sells Poulan parts. If adjusting the screws doesm't fix it, the carb will need to be overhauled or replaced. Check with www.searspartsdirect.com . Replacement carbs are sometimes cheaper than an overhaul.
Good luck!

take carby down to any mower shop ...most brushcutters use same carbys...

Your watch needs overhaul (means service ). When the time goes by, the oil used for reducing friction is reverting itself to the slimy residue, so, starting to slow/speed the watch up. Every watch, no matter what make it is, needs a proper overhaul every 2-5 years (depends on watch movement).

If the nailer is leaking out the trigger, it has to be replaced. If it is coming out of the exhaust then it needs an overhaul kit.
Parts are as follows
Trigger valve P/N TVA 11
Overhaul Kit ORK 11
Hope this helps

There is no reason to panic. Your watch needs overhaul. Find your nearest watch repairer and ask to do the job. He will be able to tell you if there are any mechanical faults.
I do not think there are any and your watch will tick as brand new after overhauling it.
Mechanical watches needs overhaul every 5-7 years.

when you mean overhaul is the motor not working or are you experiencing loss of suction or wha seems to be the problem?

Hi again,

Is your Serena:
1. auto transmission or conventional shift?
2. 4 wheel drive or Front Drive?

Salamat ulit.