Forest Master – Frequently Asked Questions
Explore a range of frequently asked questions regarding our equipment, as well as general log splitting, gardening and forestry-related questions. Is your question not here? Submit a question by emailing us at info@forest-master.com.
6HP Petrol Mulcher (FM6DD-MUL)
Last Updated on July 30, 2021 by Forest Master
Wood is too dried out
The compact chipper series is designed primarily for chipping freshly cut wood. The FM6DD has been tested thoroughly chipping freshly cut hawthorn wood (slow-grown hardwood).
We recommend that the wood is chipped no longer than three days after cutting. After this date, the wood will begin to dry out, meaning the chipper blades then struggle to dig into the wood. This produces a sawdust-like waste from the exit chute, and the chipper will struggle to self-feed.
If the chipper is producing sawdust – this is a clear sign that the wood is dry. When chipping slow-grown hardwood like fruit trees (such as cherry or apple trees) you must ensure that you chip the material the same day that it is cut to ensure the machine operates at full effectiveness.
Last Updated on August 10, 2021 by Forest Master
This largely depends on the hardness of the wood you’re chipping. The harder the wood, the quicker the blades will need to be replaced.
However, the chipper is equipped with twin reversible blades. The reversible blades mean that you can simply switch the blades around when the first set start to dull, so you get a much longer life span on the blades.
We also stock spare blades on our website, should you need to have them replaced.
You can also sharpen your blades using an oil stone. Simply sharpen the edges of the blade, do not worry about taking out any dents or marks.
Last Updated on March 8, 2021 by Forest Master
The following is an addendum to the manual provided with the garden mulcher (8th March 2021)
Complete steps 1-4 of the FM6DD-MUL assembly instruction manual as usual. Before completing step 5 of the manual, perform the following instructions written below.
(1) First, place the engine/motor unit on its side as demonstrated in the image displayed below. Please ensure that the engine has not been filled with oil or petrol at this time.

(2) You can now slide the discharge chute into the mulcher drum. The upper flange of the discharge chute should slide in above the bolt as displayed in the image to the left.

(3) After sliding the discharge chute into place, you can then secure and fasten the chute using the necessary M6 bolts (50), M6 spring washers (59) and M6 washers (41).

(4) After completing the aforementioned steps, you can then lift the engine/motor unit with the attached discharge chute on to the base of the mulcher and continue with the manual as standard.

Last Updated on March 16, 2021 by Forest Master
The mulcher is perfectly capable of receiving and processing wood branches, sticks etc. The material produced by the machine however will be 10mm down – you will not receive large wood chips from the wood placed into the machine. If you wish to process wood into wood chips, then you will require our wood chipping accessory kit for the mulcher.
Last Updated on May 4, 2021 by Forest Master
The FM6DD-MUL is perfectly capable of processing both paper and cardboard. However, cardboard can take the edge off the blades quicker than when using the mulcher to process standard green waste. If you see a drop in performance in the machine after processing cardboard, it’s likely because the sharp edge has been removed from the blades.
These blades can be sharpened using an angle grinder or you can purchase spare replacement blades directly from ourselves. Remember that the blades are also reversible so once one side dulls, you can simply reverse the blades over and use a fresh set.
Last Updated on May 4, 2021 by Forest Master
If you have been working with wet material – you may wish to wash down the machine using a hosepipe. To perform this simply spray water down into the mulcher hopper feed while the engine is running. After you have finished hosing the mulcher down – leave the engine running for a few minutes to allow the machine to dry itself off.
Last Updated on August 9, 2021 by Forest Master
We have been made aware of an issue concerning the rotation of the mulcher drum. This issue is caused by the washer under the head of the bolts not being correctly flattened. Once these have been correctly flatted it leaves a gap that allows you to rotate the drum housing.
In order to solve this, tighten the three adjusting bolts on the drum and then loosen the three nuts until they are very loose. This should allow you to then adjust the angles and retighten at the angle you require.
Last Updated on August 16, 2021 by Forest Master
All series of petrol wood chippers, garden shredders and mulchers are compatible with the use of E10 Petrol.
FM4DDE 4HP Electric Chipper
Last Updated on July 30, 2021 by Forest Master
Wood is too dried out
The compact chipper series is designed primarily for chipping freshly cut wood. The FM6DD has been tested thoroughly chipping freshly cut hawthorn wood (slow-grown hardwood).
We recommend that the wood is chipped no longer than three days after cutting. After this date, the wood will begin to dry out, meaning the chipper blades then struggle to dig into the wood. This produces a sawdust-like waste from the exit chute, and the chipper will struggle to self-feed.
If the chipper is producing sawdust – this is a clear sign that the wood is dry. When chipping slow-grown hardwood like fruit trees (such as cherry or apple trees) you must ensure that you chip the material the same day that it is cut to ensure the machine operates at full effectiveness.
Last Updated on August 10, 2021 by Forest Master
This largely depends on the hardness of the wood you’re chipping. The harder the wood, the quicker the blades will need to be replaced.
However, the chipper is equipped with twin reversible blades. The reversible blades mean that you can simply switch the blades around when the first set start to dull, so you get a much longer life span on the blades.
We also stock spare blades on our website, should you need to have them replaced.
You can also sharpen your blades using an oil stone. Simply sharpen the edges of the blade, do not worry about taking out any dents or marks.
FM6DD 6HP Petrol Wood Chipper
Last Updated on July 30, 2021 by Forest Master
Wood is too dried out
The compact chipper series is designed primarily for chipping freshly cut wood. The FM6DD has been tested thoroughly chipping freshly cut hawthorn wood (slow-grown hardwood).
We recommend that the wood is chipped no longer than three days after cutting. After this date, the wood will begin to dry out, meaning the chipper blades then struggle to dig into the wood. This produces a sawdust-like waste from the exit chute, and the chipper will struggle to self-feed.
If the chipper is producing sawdust – this is a clear sign that the wood is dry. When chipping slow-grown hardwood like fruit trees (such as cherry or apple trees) you must ensure that you chip the material the same day that it is cut to ensure the machine operates at full effectiveness.
Last Updated on August 10, 2021 by Forest Master
This largely depends on the hardness of the wood you’re chipping. The harder the wood, the quicker the blades will need to be replaced.
However, the chipper is equipped with twin reversible blades. The reversible blades mean that you can simply switch the blades around when the first set start to dull, so you get a much longer life span on the blades.
We also stock spare blades on our website, should you need to have them replaced.
You can also sharpen your blades using an oil stone. Simply sharpen the edges of the blade, do not worry about taking out any dents or marks.
Last Updated on August 16, 2021 by Forest Master
All series of petrol wood chippers, garden shredders and mulchers are compatible with the use of E10 Petrol.
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