1.1     The helmet , hoses, air entry ports and fittings should be routinely checked for dust and debris and cleaned when contaminated or there is a suspicion of abrasive having entered the helmet (See 7)

1.2     The inner safety window should not need changing often if properly protected by the intermediate and the outer windows. To change an inner safety window, first remove the latex helmet cover (if fitted) then remove the old inner safety window. Ensure that the gasket is clean and fully seated within the helmet shell window aperture. Seat the new safety window fully into the root of the window slot of the gasket, ensuring a perfect seal is made between gasket and helmet shell and between gasket and inner safety window

1.3     Check sponge seal on inside of window frame. Replace if damaged or torn

1.4     The suspension assembly is a critical factor in assuring helmet wearer safety, and it should be replaced at the first signs of wear

1.5     When the helmet cape becomes soiled it may be removed and washed in warm soapy water. To remove the cape:

1.5.1  Slide one end out of the helmet attachment strap at the part where the groove is notched

1.5.2  Continue to slide the cape around the rim of the helmet until the cape is completely detached from the groove.

1.6     To install the new cape:
1.6.1  Slide one end into the helmet attachment strap at the part where the groove is notched

1.6.2 Continue to slide the cape around the rim of the helmet until the whole cape is completely in the groove and the single line stitch on the cape is at the centre back position.

1.7     Replace the chin strap if worn

1.8     Replace the window frame if badly worn or when it becomes difficult to maintain a seal between the window frame, outer windows, intermediate window and the window gasket

1.9     Where the optional latex helmet cover is fitted, it should be checked for wear and thoroughly cleaned prior to refitting to the helmet. When refitting care should be taken to ensure that it is positioned correctly beneath the window frame
NB.  It may be necessary to trim the rubber around the window frame to ensure the window latch engages correctly

1.10   When the inlet filter screen (27) in the air control valve outlet  or helmet inlet (12) need to be replaced remove the retaining washer with a small screwdriver, remove dirty filter and replace with new kit.

2.0 CLEANING

2.1   Remove cape and muffler lining (See 1.5) wash using warm soapy water

2.2     Wash the helmet assembly and belt with warm soapy water DO NOT IMMERSE THE HELMET INWATER as this will saturate the acoustical foam layer located between the inner and outer helmet shell

2.3 Removal and cleaning of the suspension assembly

2.3.1  Detach the suspension assembly from the helmet by withdrawing the tapered slides from their housings

2.3.2  Detach the chin strap links from the two buttons

2.3.3  Clean sweatband assembly and chin strap using warm soapy water

2.3.4  Refit the helmet suspension assembly ensuring the tapered slides are fully in their housings

2.4     In the event that the acoustic foam lining inside the helmet becomes contaminated or there is a suspicion that abrasive may have entered the helmet, the following clean out procedure should be taken;

2.4.1  Remove the cape from the helmet

2.4.2  Hold the helmet upside down and remove the LH and RH self adhesive cheek pads

2.4.3  Remove the chin strap from each side post

2.4.4  Remove the six head harness supports

2.4.5  Knock out the two retaining dowels (16) from each side and withdraw the inner crown

2.4.6  Remove the two layers of acoustic filter material

2.4.7  Carefully clean the helmet interior out and ensure no contamination and or abrasive particles remain

2.4.8  Fit the new set of acoustic filter pads ,  correctly positioning them into the top and sides of the helmet shell first by positioning the two halves of the close cell type adjacent to the helmet shell and then placing the one-piece open cell type over it so that the inner crown retainers are not obstructed

2.4.9  Refit the inner crown, replace the two retaining dowels and suspension assembly, and ensure that all the tapered slides are firmly seated in their housings

2.4.10 Fit new self-adhesive LH and RH cheek pads

2.4.11 Re-attach chin strap by inserting the strap links over the buttons

2.5     When the filter screens in the helmet air inlet and air control valve outlet need to be replaced, remove the retaining ring/washer with a small screwdriver, remove dirty filter screen and replace with new kit