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Author Topic:   Mercury 4S maintenance - Valves

cape_rover posted 11-06-2003 06:51 AM ET (US)
What kind of maintenance is required for a Merc 90 4 stroke and can a do-it-yourself-er do the work? I've read there is valve and oil (injection?) adjustments that are required. How difficult are these to do and how often do you need to do it? Is any other maintenece requred other than changing the fluids.
Barney posted 11-06-2003 08:58 AM ET (US)
Cape, There are no "required" adjustments of the valves listed in the owners manual. There is a comment "as necessary" in the service section. There are some other checks of the timing belt.
Crankcase oil and lower unit oil change is easy. I will check everything myself as necessary. There are no big items to take care of.
The manual does say take it to the dealer for some of the things. If you have questions ask the dealer to look at the owners manual. Jim
lhg posted 11-06-2003 01:55 PM ET (US)
If you're concerned about this kind of maintenance, you might ask BW for availability of the 90 Optimax, or simply get a conventional 2-stroke. The boat might go faster also. Since you appear to be a window shopper at this time, by the time you're ready to buy one of these great boats, the Optimax will be available.
cape_rover posted 11-06-2003 03:47 PM ET (US)
This is an email I received from whaler:
[I'm afraid the 90 hp Mercury Optimax engine is not, currently, available as an option for the Montauk, however, Whaler will be performing tests on the new engine/boat combination and as soon as it validated, your Dealer will be informed on pricing and availability.]
I may sign the paper work next weekend on a M170 if I come to an agreement with the dealer. I'm just tring to learn as much as possible about the boat before I buy. I'm not really concerned about the maintenance, I just want to know what to expect.
lhg posted 11-07-2003 03:50 PM ET (US)
The above post from BW reminds me of anti-Mercury troll who posted he was unhappy with the performance of the 90 Optimax on his Dauntless!!!
I have heard that the 115 is first out, to be followed with the 75's and 90's later. So I'm sure the Montauk will get them in the Spring or whenever. I'm anxious to hear how people like them.

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Author	Topic: Mercury 4S maintenance - Valves
cape_rover	posted 11-06-2003 06:51 AM ET (US) What kind of maintenance is required for a Merc 90 4 stroke and can a do-it-yourself-er do the work? I've read there is valve and oil (injection?) adjustments that are required. How difficult are these to do and how often do you need to do it? Is any other maintenece requred other than changing the fluids.
Barney	posted 11-06-2003 08:58 AM ET (US) Cape, There are no "required" adjustments of the valves listed in the owners manual. There is a comment "as necessary" in the service section. There are some other checks of the timing belt. Crankcase oil and lower unit oil change is easy. I will check everything myself as necessary. There are no big items to take care of. The manual does say take it to the dealer for some of the things. If you have questions ask the dealer to look at the owners manual. Jim
lhg	posted 11-06-2003 01:55 PM ET (US) If you're concerned about this kind of maintenance, you might ask BW for availability of the 90 Optimax, or simply get a conventional 2-stroke. The boat might go faster also. Since you appear to be a window shopper at this time, by the time you're ready to buy one of these great boats, the Optimax will be available.
cape_rover	posted 11-06-2003 03:47 PM ET (US) This is an email I received from whaler: [I'm afraid the 90 hp Mercury Optimax engine is not, currently, available as an option for the Montauk, however, Whaler will be performing tests on the new engine/boat combination and as soon as it validated, your Dealer will be informed on pricing and availability.] I may sign the paper work next weekend on a M170 if I come to an agreement with the dealer. I'm just tring to learn as much as possible about the boat before I buy. I'm not really concerned about the maintenance, I just want to know what to expect.
lhg	posted 11-07-2003 03:50 PM ET (US) The above post from BW reminds me of anti-Mercury troll who posted he was unhappy with the performance of the 90 Optimax on his Dauntless!!! I have heard that the 115 is first out, to be followed with the 75's and 90's later. So I'm sure the Montauk will get them in the Spring or whenever. I'm anxious to hear how people like them.